body {
  margin: 0;
  font-family: 'Segoe UI';
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  background: #111;
  color: white;
  padding: 15px 30px;
}

nav a {
  color: white;
  margin: 0 10px;
  text-decoration: none;
}

/* Slider */
.hero-slider {
  position: relative;
  height: 100%;
  overflow: hidden;
}

.slides {
  display: flex;
  transition: 0.5s;
}

.slide {
  min-width: 100%;
  position: relative;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.overlay {
  position: absolute;
  top: 50%;
  left: 10%;
  color: white;
  background: rgba(0,0,0,0.6);
  padding: 20px;
}

/* Buttons */
.prev, .next {
  position: absolute;
  top: 50%;
  background: black;
  color: white;
  border: none;
  padding: 10px;
}

.prev { left: 10px; }
.next { right: 10px; }

/* Features */
.features {
  display: flex;
  justify-content: space-around;
  padding: 40px;
}

.card {
  width: 30%;
  padding: 20px;
  background: #f4f4f4;
  text-align: center;
}